Hi there~ I have a Hayward EC40 DE filter, which came with the pool, used Since we have had it, the starting pressure has always been 15-17 PSI. I'm told that it's high and shouldn't be that way. Is that an accurate statement? Also, I took it apart yesterday and soaked it for 8+ hours in the water/dishwasher detergent mix, pulled it out and soaked for 1/2 hour in the 1:1 MA solution. When I put this thing back together today, what should a good starting pressure be? I know each unit varies, but I'm looking for the norm. The question I have about the MA is would it be effective in cleaning if I keep it to reuse because I know that with my pool as green as it is, I will need to clean it again before too long. Plus, how long could I continue to use it? That is, IF anybody has experience re-using it. Thanks!